典型啤酒废水处理UASB+SBR工艺设计

通过对工程投资的预算,设计建造总投资金额为1338.55万元,平均每吨啤酒废水的处理费用约为1.252元,满足技术要求。


设计总说明:本文主要设计一个典型啤酒废水废水处理厂,啤酒厂每天排出最大水量为8000 m3的啤酒废水,其平均排水水质情况为CODCr=2000mg/L、BOD5=900mg/L、氨氮=35mg/L、总磷=10mg/L、SS=750mg/L、PH=5-10。BOD5/CODCr=0.45,生物降解容易,可生化性较好。本设计采用两级生物处理的方法。第一级处理工艺采用物理法,清除废水中较大的悬浮物、垃圾以及无机物。二级处理工艺采用生化法,包含厌氧生物处理中的UASB方法和SBR法进行有氧生物处理。UASB反应器对CODCr的去除率可以达到70%-80%,对BOD5有较高的去除率,通常可以达到80%-90%。经过了UASB反应器的处理,不仅能够提高废水的可生化性,同时去除大量COD。SBR法对COD的去除率为75%-85%,对BOD的去除率达到80%-90%。

根据确定的工艺流程,通过对格栅井、污水提升泵房、调节池、UASB反应器、SBR反应池和污泥浓缩池等 构筑物的设计计算,了解各构筑物的尺寸,从而推算出建设厂区所要的管路、水力损失,以及高程。通过对设计说明书编写,以及工艺流程图(含高程布置)、主体构筑物截面图和平面布置图的绘制,对啤酒废水处理厂的平面和高程进行了合理的布置。

本设计具有处理效果好,总投资少,工艺简单,运行稳定,占地面积省,能耗少的优点。同时具有技术上可行、经济上合理的效果。设计采用了目前较为成熟的处理工艺,污水经处理后的 出水水质如下,CODCr=74.4mg/L; BOD5=18.8mg/L;SS=65.6mg/L。已经大大的改善了废水水质,达到了减少污染的目的。

关键词: 啤酒废水;高浓度有机废水;UASB;SBR

Typical beer wastewater treatment process design

Abstract:This article mainly designs a typical brewery wastewater wastewater treatment plant. The brewery discharges a maximum of 8000 m3 of brewery wastewater every day. The average wastewater quality is CODCr=2000 mg/L, BOD5=900 mg/L, ammonia nitrogen=35 mg/L, and total phosphorus. = 10 mg/L, SS = 750 mg/L, PH = 5-10. BOD5/CODCr=0.45, biodegradation is easy, biodegradability is better. This design uses a two-stage biological treatment method. The first-stage treatment process uses physical methods to remove large suspended solids, garbage, and inorganic matter from the wastewater. The secondary treatment process adopts biochemical method, including UASB method and SBR method for aerobic biological treatment in anaerobic biological treatment. The removal rate of CODCr in the UASB reactor can reach 70%-80%, and the removal rate of BOD5 is high, usually it can reach 80%-90%. After UASB reactor treatment, not only can improve the biodegradability of wastewater, while removing large amounts of COD. The removal rate of COD by SBR method is 75%-85%, and the removal rate of BOD is 80%-90%.

According to the determined process flow, through the design and calculation of the structures such as grid wells, sewage pumping stations, regulating tanks, UASB reactors, SBR reaction tanks, sludge thickening tanks, and so on, the size of each structure is known, and the construction site area is calculated. Pipeline, hydraulic loss, and elevation. Through the preparation of the design specification, and the drawing of the process flow chart (including elevation layout), the cross section of the main body structure, and the plan layout, the plane and elevation of the brewery wastewater treatment plant were rationally arranged.

This design has the advantages of good treatment effect, low total investment, simple process, stable operation, space saving, and low energy consumption. At the same time, it has technically feasible and economically reasonable results. The design adopts a relatively mature treatment process. The effluent quality of treated sewage is as follows: CODCr=74.4mg/L; BOD5=18.8mg/L; SS=65.6mg/L. The wastewater quality has been greatly improved and the purpose of reducing pollution has been achieved.