江西萍乡某淀粉厂污水处理，废水排放处理成功案例

江西萍乡某淀粉厂污水处理，废水排放处理成功案例

处理工艺

1 生产工艺及水质

淀粉废水主要来源于玉米淀粉加工过程中的洗涤、压滤、浓缩等工艺段，用水量由于生产设备和生产工艺的不同，约为2~8m³水/t淀粉。根据该淀粉厂水质监测结果，同时参照国内部分相类似淀粉厂的排水水质实际情况，综合考虑各种因素，确定废水处理站的设计进水水质见下表：

                             设计进水水质

出水水质指标

主要设计参数

1.格栅和集水井   格栅井和集水井为新建钢混结构。在废水进水渠道上，设置格栅井，内设机械格栅一道。格栅井结构尺寸4.0m×0.8m×4.0m。集水井结构尺寸2.5m×2.5m×5.0m。机械格栅一台，栅宽700mm，格栅倾角60℃，功率2.2KW。配螺旋输送机1台，直径260mm，功率2.2KW。提升水泵流量110m³/h，扬程13.0m，功率7.5kW，2台（1备1用）。

2. 进水初沉池  采用竖流式沉淀池，几何尺寸：Ø9.0m×8.0m，有效水深7.5m。内有导流筒1套，规格Ø0.70m×3.5m。

3.调节池  尺寸Ø9.0m×8.0m，有效水深7.25m，调节池数量为3座，停留时间为22h，其中2座为事故池。

4.EGSB进水池  进水池的作用主要是调节池EGSB反应池进水的温度、pH值，同时也作为EGSB反应池的循环回流池。钢混结构，尺寸3.0m×3.0m×7.4m，有效水深6.9m。立式搅拌机1台，功率3.0kW；水力曲筛1套，尺寸1.5m×1.2m，间隙0.50mm。

工程评析

本工程淀粉废水的BOD/COD值大于0.4，可生化性很好，因此采用生物处理工艺是合适的，以在尽量低的费用下，可靠地将有机污染物降到所要求的水平。厌氧工艺采用了高负荷的EGSB工艺，占地面积小，投资省。从运行结果来看，该工艺运行可靠，出水稳定达标。

Jining Tian Tong Environmental Protection Technology Co., Ltd. is an environmental protection enterprise which integrates R & D, production, sales, technology application and promotion. The company mainly undertake production and drinking water purification, sewage treatment engineering and environmental protection equipment manufacturing, sales business. The production of environmental protection equipment mainly includes the production and sale of buried integrated sewage treatment equipment, scraper and suction machine, air floater, inclined tube precipitator and filter tank. Environmental protection projects are mainly devoted to the design, construction, installation and commissioning of various industrial sewage, medical waste water and domestic sewage.

Jining Tian Tong equipment company and China University of Petroleum, Ocean University of China and other industry contacts in the many well-known colleges and universities, employing a number of well-known domestic and foreign experts to guide our teaching, achieve the company will continue to forge ahead, keep pace with the times, new technology, new achievements in practice, better realize the enterprise to reduce the emission of pollutants, protect the local the environment. Our company has a large number of elites who have long been engaged in the design and construction of sewage engineering, with rich experience and mature technology.