屠宰污水处理设备是采用玻璃钢、碳钢、不锈钢防腐结构，具有耐腐蚀、抗老化等优良特性，使用寿命长达30 年以上;放置于地表以下，设备上面的地表可作为绿化或其他用地，不需要建房及采暖、保温。zui大限度的实现了系统的集成，减少占地面积;无污染，无噪声，无异味，减少二次污染;不受屠宰污水量的限制，机动灵活，可单个使用，也可多个联合使用;针对性强，可有效去除屠宰污水中的有机物以及氨氮;整个屠宰污水处理设备处理系统配有PLC全自动电气控制系统和设备故障报警系统，运行安全可靠，平时一般不需要专人管理，只需适时地对设备进行维护和保养，管理费用小。

屠宰污水来源福州一体化屠宰场污水处理设备

福州一体化屠宰场污水处理设备

屠宰污水主要来自于圈栏冲洗、淋洗、屠宰及其它厂房地坪冲洗、烫毛、剖解、副食加工、洗油等工序所产生的污水。

水质特点

①屠宰污水一般呈红褐色，有难闻的腥臭味,其中含有大量的血污、油脂质、毛、肉屑、骨屑、内脏杂物、未消化的食物、粪便等污物，固体悬浮物含量高。

②屠宰污水有机物含量高，可生化性好其中高浓度有机质不易降解，处理难度较大，宰污水中的营养物主要是氮、磷，其中氮主要以有机物或铵盐形式存在，而磷主要以磷酸盐的形式存在。

设计思路

根据屠宰污水特点和处理难点大体设计思路是:

(1)一级处理:排放的废水先后流经粗细两道格栅，主要去除较大悬浮物和漂浮物，防止污水提升泵等机械设备堵塞。然后流入隔油沉淀池，废水中含有泥沙等，这些可通过自然沉淀去除，沉淀的泥沙定期用污泥泵打入污泥浓缩罐。油脂则漂浮在水面，可以人工捞出回收处理。由于其废水水质水量波动较大，以确保后续处理效果和运行稳定性，在处理工艺流程中设置调节池，以均化水质水量。保证系统平稳运行。还可以通过调节池均化其本身的酸、碱度，以使废水的pH值满足后续处理工艺的要求。废水中含有的血污、油脂、油块等，通过混凝气浮得到有效的去除。

(2)二级处理:对于屠宰废水中难降解、浓度较高的CODCr、BOD5，预处理过程中不能*去除，故二级处理采用生化处理，本设计采用水解酸化-好氧生物处理技术。水解酸化池主要目的将大分子有机物分解成小分子有机物，以便在好氧过程中进一步得到去除。

(3)三级处理:好氧处理后的出水，溢流到沉淀池中，沉淀后上清水进入消毒池，沉淀池中的污泥定期用泥浆泵打入污泥浓缩罐中。

工艺流程

来自屠宰场的污水经格栅(网)去除污水中的毛、皮、浮渣和大颗粒悬浮物后自流入隔油池，屠宰污水处理流程去除大部分油脂和泥砂后进入调节池，经调节池调节水质水量后，并保证后续处理设施的正常运行。经过调节池的水经泵提升至平流式气浮沉淀一体机。先期去除水中悬浮物(ss)，去除率达90%以上，出水进入一体化污水处理设备，一体化污水处理设备由(水解酸化池、二级接触氧化池、沉淀池组成)，污水在水解酸化池进行酸化处理，通过厌氧菌将大分子有机物转化成低分子有机物;经水解酸化池流入接触氧化池进行生化反应后再进入沉淀池，出水经过滤消毒达标排放

应用分析

考虑屠宰污水水质特点，对比各种处理方法的优缺点，得出目前屠宰污水有效的处理技术为:以生物法为主，辅助必要的物理、化学等方法作预处理。例如以采用生物处理法为主体的二级SBR法工艺路线处理效果较好。在北方地区，尤其是经济不发达的北方地区，考虑到气温低，占地要求小，运行费用要求低等因素，深井曝气法为*方法。

厌氧生物处理成本低，但不能较好地去除氨氮，故对于出水水质要求较高的情况下，通常经过厌氧处理后，还需进行好氧处理或采用化学法去除氨氮才能达到水质排放要求。好氧法不仅可以获得很高的CODcr去除率，而且还可以去除氮、磷，但成本很高，所以对于高浓度屠宰污水，通常首先经厌氧生物法处理，然后使用好氧法处理，综合使用厌氧和好氧生物法的优点，可以获得高CODcr去除率，同时去除氮、磷，还降低成本。

采用生物法处理屠宰污水可考虑回收利用问题。活性污泥经过一定处理后，可作为动物饲料用[24]，还可回收屠宰污水中的蛋白质和脂肪，产品可用作动物饲料，还可以生产沼气和无害肥。达到开发能源，变废为宝，又促进农业养殖业发展的目的，是一项具有生态平衡良性循环的可持续发展工程。屠宰污水的治理经验对于城市和养殖业粪便污染的治理有着较好的参考价值。

设备原理

由于屠宰污水中含有一定量的大块漂浮物(血污、毛皮、杂物 染物等)，因此先用格栅予以拦截下来，以保证后续设备的正常运行，因为屠宰污水中含有血污、油脂等大分子有机物存在，直接进入好氧将很难降解，因此格栅出水进入化粪池。屠宰场现有化粪池能够起到一定的处理效果，但现有出水浓度依然很高并且夹带部分油脂，为了减轻后续处理设施的负荷，因此考虑在前端加一座隔油池以去除油脂。屠宰场因为工作时间的因素，它的排水周期跟其它污水排放周期不同，它主要集中在夜间排放，因此必须设置一个较大的调节池来调节水质水量以保证整套设施的正常运行，减轻对后续设施带来的冲击负荷，污水经调节池收集然后通过泵泵入后续处理设施。污水经过前端化粪池处理后，污水中依然含有大部分大分子有机污染物，因此需要进一步对其降解为小分子物质，为后续好氧生化做准备，并且考虑到污水中氨氮和总磷的超标，因此必须设施好氧-缺氧的交替运行环境来达到硝化-反硝化的交替运行来达到脱氮除磷的效果，此处通过设置水解酸化池将后续好氧处理出水部分回流至水解酸化池来实现。污水经过水解酸化池后进入好氧池，此处将好氧池分为两段，它的好处在于在不同的好氧段，微生物根据环境不同而呈现空间的分布，具备针对性，有着更好的去除效果。污水经过前端各个生化处理设施处理后，有机污染负荷很大程度得到降解。但污水中色度依然难以达标，为了对色度的去除，并同时考虑对COD的降低和氨氮及总磷的降低，因此此处设置混凝沉淀池并且投加针对性的药剂。沉淀池出水，进入消毒池，然后zui终达标排放。

适用范围

适用于中小型宰鸡、宰猪、宰鸭以及宰牛、宰羊等各种屠宰肉联企业，肉制品加工场。

工艺优点

1、采用的生物接触氧化处理工艺，比活性污泥池体积小，适应性强，耐冲击负荷性能好，出水水质稳定，不会产生污泥膨胀;

2、填料比表面积大，微生物易挂膜，脱膜，在同样有机物负荷条件下，对有机物去除率高，稳定可靠，同时无需投加药剂，节约后续成本，降低运行费用;

3、水解酸化可有效污水血色，分解大分子有机物，减少后续处理负荷;

4、沉淀效果理想，可获得较好的出水水质;

5、消毒处理，去除率达到99.4%以上;

6、妥善处理剩余污泥，保证系统的稳定可靠运行，排泥方便，减少人工操作

7、采用*的构造方式，zui大限度减少臭气扩散;

8、运行管理简单，可根据实际情况进行运行状态调整，以获得运行效果;

9、净化效率高，BOD去除率在85%~90%，出水各项指标达到国家二级或一级排放标准，

10、能够处理屠宰行业污水及其相类似的工业有机污水;

The treatment equipment for slaughtering wastewater is glass reinforced plastic, carbon steel, stainless steel, corrosion resistant, anti-aging, etc., which can be used for more than 30 years. Placed below the surface of the earth, the surface of the equipment can be used as green or other land. Maximising the integration of the system, reducing the area of space; No pollution, no noise, no smell, reduce secondary pollution; It is not limited by the amount of sewage to be slaughtered. It is flexible and flexible. It can be used individually or in combination. It can effectively remove organic matter and ammonia nitrogen from slaughtering wastewater. The slaughter wastewater treatment equipment processing system is equipped with PLC automatic electric control system and equipment fault alarm system, safe and reliable running, normally do not need of personnel management, just in time to the equipment maintenance and maintenance, management cost is small. 
Sewage source 
The slaughtering wastewater mainly comes from washing, washing, slaughtering and other plant floor rinsing, ironing, cuting, cutting, processing and washing of oil. 
The water quality characteristics 
1) slaughter wastewater generally is reddish brown, has the unpleasant stench, which contains a lot of blood, fat mass, wool, meat scraps, skeletal, visceral sundry, undigested food, fecal sewage, such as high content of suspended solids. 
Slaughter organic matter is high concentrated wastewater (2), can be good biochemical with high concentration of organic matter is not easy to degrade, processing is difficult, the nutrients in slaughter wastewater is mainly nitrogen and phosphorus, which mainly exists in the form of organic matter or ammonium salt of nitrogen, and phosphorus mainly exists in the form of phosphate. 
Design ideas 
According to the characteristics of the slaughterhouse and the difficulties of treatment, the general design idea is: 
(1) first order treatment: the effluent effluent flows through thick and thin grille, mainly removing the larger suspension and floatation, and preventing the blockage of mechanical equipment such as sewage pumping. Then flow into the grease trap, the waste water contains silt, etc. These can be removed by natural precipitation, and the sediment of sediment can be pumped into the sludge concentrator regularly. Oil floats on the surface of the water and can be retrieved and disposed of. Due to the high fluctuation of water quality of wastewater, it is needed to ensure the effect and operation stability of the subsequent treatment, and to set up the adjustment pool in the process flow to homogenize the water quality. Ensure the smooth operation of the system. The acid and alkalinity of the water can also be used to make the pH value of wastewater meet the requirements of the subsequent treatment process. Wastewater contains blood, grease, oil, etc., which can be effectively removed by coagulation. 
(2) the secondary processing: to refractory in slaughter wastewater and high concentration of CODCr, BOD5, cannot compley remove pretreatment process, so the secondary treatment using biochemical treatment, the design adopts hydrolysis acidification - aerobic biological treatment technology. The main purpose of the hydrolysis acidification pool is to decompose large molecular organic matter into small molecule organic materials, which can be further removed during the aerobic process. 
(3) three-level treatment: after the aerobic treatment, the water is poured into the sedimentation tank. After the precipitation, the sludge is deposited into the disinfectant pool. The sludge in the sedimentation tank regularly pumps into the sludge tank with mud pump. 
The process flow 
From slaughterhouse wastewater by grid (mesh), remove the wool and leather in the sewage, scum and larger particles suspended since into the separation tank, after slaughter wastewater treatment processes to remove most of the oil sand and mud into the regulation pool, after after regulating pool water, and ensure the normal operation of the subsequent treatment facilities. The water through the regulating pool is pumped up to the flat flow type air floating precipitator. Early removal of suspended solids (ss) in water, the removal rate of more than 90%, the water into the integrated wastewater treatment equipment, the integration of sewage treatment equipment by hydrolysis (acidification, secondary contact oxidation pool, pool of sedimentation tank), sewage in acidizing hydrolysis acidification pool, macromolecular organic matter into low molecular organic compounds by anaerobic bacteria; After the hydrolyzed acidification pond was released into the contact oxidation pond for biochemical reaction, then it entered the sedimentation tank and the water was filtered and disinfected to meet the standard discharge 
Application analysis 
Consider slaughter wastewater quality characteristics, comparative advantages and disadvantages of various processing methods, it is concluded that the slaughter of the most economic and effective sewage treatment technology for: give priority to with biological methods, auxiliary necessary preprocessing methods such as physics, chemistry. For example, the secondary SBR process with biological treatment is better. In the northern region, especially in the economically underdeveloped northern region, the method of deep well aeration is the preferred method, considering the low temperature, small land cover and low operating expenses. 
Anaerobic biological treatment of low cost, but can not be better to remove ammonia nitrogen, so the higher requirements for water quality, usually after anaerobic treatment and aerobic treatment or chemical method is used to remove ammonia nitrogen emissions to reach the water quality requirements. Aerobic method can not only get high CODcr removal rate, but also can remove nitrogen and phosphorus, but the cost is very high, so for the high concentration of slaughter wastewater, usually by the anaerobic biological treatment, first and then use the method of aerobic treatment, integrated the advantages of using anaerobic anaerobic-aerobic biological method, can obtain high CODcr removal rate, removal of nitrogen and phosphorus at the same time, also reduce the cost. 
The use of biological method to treat slaughtering wastewater can be considered for recycling. Activated sludge after a certain processing, can be used as animal feed [24], protein and fat in slaughter wastewater is recycled, the product can be used as animal feed, can also produce methane and harmless fertilizer. It is a sustainable development project with ecological balance and virtuous cycle to reach the goal of developing energy, turning waste into treasure and promoting the development of agricultural aquaculture industry. The management experience of slaughtering wastewater has good reference value for the treatment of fecal pollution of city and breeding industry. 
Principle of equipment 
Due to slaughter wastewater containing a certain amount of large pieces of debris (blood, fur, dye stuff, etc.), so use first grille shall be stopped and to ensure the normal operation of the follow-up device, because the slaughter wastewater containing bloodstains, grease and other macromolecular organic matter, directly into the aerobic will be difficult to degradation, so the grille of the water into the septic tank. Slaughterhouse existing septic tanks can play a certain treatment effect, but the existing water concentration is still high and the entrainment of oil, in order to reduce the load of the subsequent treatment facilities, so consider on the front end and a separation tank to remove grease. Slaughterhouse because of their working time, it's different with other sewage drainage cycle period, its emissions are mainly concentrated in the night, so you must set up the regulation of a larger pool to adjust water in order to ensure the normal operation of the whole set of facilities, reduce the impact of load on a subsequent facilities, sewage collection by adjusting pool and then through the pump into the subsequent treatment facilities. Sewage after dealing with the front-end septic tanks, sewage still contains most of the macromolecular organic pollutants, so need to be further to the degradation of small molecules, in preparation for the subsequent aerobic biochemical, and considering the ammonia nitrogen and total phosphorus in sewage, must therefore be facilities aerobic - alternating anoxic running environment to achieve nitrification - denitrification, alternating operation to achieve the effect of nitrogen and phosphorus, here by setting the hydrolysis acidification pool parts of subsequent aerobic treatment water back into the hydrolysis acidification pool. Sewage after hydrolysis acidification pool into the aerobic pond, aerobic pool can be divided into two segments here, its advantage in different aerobic section, microbes were present spatial distribution according to different environment, have specific aim, has a better removal effect. After treatment by various biochemical treatment facilities on the front end, the organic pollution load is degraded to a great extent. But still cannot satisfy in sewage chroma, in order to remove the chroma, and at the same time considering the reduce of COD and ammonia nitrogen and total phosphorus, so this set of coagulation sedimentation tank and adding targeted agents. The sedimentation tank comes out of the water, enters the disinfection pool, and finally ends up discharging. 
Scope of application 
It can be used for slaughtering chicken, slaughtering duck, slaughtering duck, slaughtering sheep, slaughtering sheep, slaughtering and slaughtering meat. 
Technological advantages 
1. The biological contact oxidation process adopted is smaller than the volume of activated sludge tank, good adaptability, good impact load performance, stable water quality and no sludge expansion; 
2 large specific surface area, stuffing, microbial easy hanging membrane, membrane, under the same load condition, the organic matter of high removal rate of organic matter, stable and reliable, without adding the potions, saving the cost of subsequent, reduce the operation cost; 
3. Hydrolysis acidification can effectively sewerage blood color, decompose macromolecules and reduce the subsequent load; 
The precipitation effect ideal, can obtain the better water quality; 
5. Disinfection treatment, the removal rate reached more than 99.4 percent; 
6. Properly handle the remaining sludge, ensure the stable and reliable operation of the system, facilitate the discharge of mud, and reduce manual operation 
7. Adopt unique construction methods to minimize the spread of odor. 
8. The operation management is simple and can be adjusted according to the actual conditions to get the operation effect; 
9. High purification efficiency, BOD removal rate is 85% ~ 90%, and the effluent indicators reach the national level ii or grade 1 emission standard, 
10. Capable of handling sewage and similar industrial organic sewage in slaughtering industries;