DH高效污水净化器工作原理及结构资料

ZJ/DH-II型高效污水净化器是在原DH型高效污水净化器基础上改进而成，将物理、化学反应有机融合在一起，集成了直流混凝、临界絮凝、离心分离、浅层沉淀、动态过滤及污泥浓缩沉淀技术，短时间内（25～30min）在同一罐体中完成废水快速多级净化的一体化组合设备。该设备SS去除率高达99.9%，COD去除率达到40%～70%。

净化器为钢制罐体，上中部为圆柱体，下部为锥体，自下而上分别为污泥浓缩区、混凝区、离心分离区、动态过滤区、清水区。

直流混凝和临界絮凝技术取代了混凝反应池，在泵前及泵后投加絮凝和助凝药剂，利用泵、管道、水流完成药剂的水解、混合、压缩双电层，吸附中和作用后高速沿切线方向进入罐体快速完成吸附架桥，絮凝形成矾花。

离心分离是利用废水沿切线方向进入罐体产生高速旋流、产生离心力，在离心力的作用下废水中形成的悬浮颗粒及矾花被甩向器壁，并随下旋流及自身重力作用沿罐内壁下滑至锥形污泥浓缩区，废水向下作螺旋运动到一定程度后向中心靠拢，又形成向上的旋流，这股旋流水质较清，流向设置在上层动态过滤区。在离心分离区一般粒径大于20μm的悬浮颗粒（矾花）被固液分离至污泥浓缩区。废水经离心分离进入浅层沉淀区，斜管沉淀区是根据浅池沉淀理论设计。在沉降区域设置许多密集的斜管，使水中悬浮杂质在斜板或斜管中进行沉淀，水沿斜板或斜管上升流动，分离出的泥渣在重力作用下沿着斜板（管）向下滑至池底，再集中排出。这种池子可以提高沉淀效率50～60%，在同一面积上可提高处理能力3～5倍。浅层沉淀区上部出水进入动态过滤区再次完成吸附过滤作用，过滤区采用表面吸附的悬浮滤料，表面积大、吸附能力强，可截留5μm以上的粒径的悬浮物。在动态状态下过滤，因此滤料不易堵塞，吸附的颗粒物易脱落又下沉至分离区，因此滤料反洗周期长（0.5～1个月反冲洗一次）。废水经多级固液分离及净化后排出。

离心分离、浅层沉淀、过滤脱落的悬浮颗粒在离心力及重力的作用下进入污泥浓缩区，污泥在锥形泥斗区中上部经聚合力的作用下，颗粒群体结合成一整体，各自保持相对不变位置共同下沉，在泥斗区中下部SS很高，颗粒间将缝隙中液体挤出界面，固体颗粒被浓缩压密后从锥体底部排出，一般污泥含水率≤90%（排污量只有传统工艺的1/6）。

Working principle and structure

What ZJ had/DH - II type high efficient wastewater purifier is based on the original DH type high efficient wastewater purifier improvement, physical and chemical reaction of organic fuses in together, integrates the dc coagulation, flocculation, centrifugal separation critical, shallow layer settling, dynamic filtering and precipitation technology, sludge concentration in a short period of time (25 ~ 30 min) completed in the same tank wastewater rapid multi-level integrated combination of purification e SS removal rate of the e is as high as 99.9% and COD removal rate is as high as 40% ~ 70%.

The purifier is steel tank body, the upper middle part is cylinder body, the lower part is cone body, and the bottom part is sludge concentration area, coagulation area, centrifugal separation area, dynamic filtration area and clean water area respectively. Dc coagulation and critical flocculation technology replaced the coagulation reaction tank, the pumps before and after adding the flocculation and coagulation agent, using complete hydrolysis of pumps, pipes, water, mix, compressed double electric layer, high speed along the tangent direction after neutralization adsorption into fast adsorption bridging of tank, flocculation form alum flowers.

Centrifugal separation along the tangent direction is to use the waste water into the tank to produce high-speed swirl, generate centrifugal force, under the action of centrifugal force formed in the waste water of suspended particles and alum flowers thrown to the wall, and with the vortex and its gravity along the tank wall fell to conical sludge concentration, spiral motion conditions at the lower levels to a certain degree of wastewater to center, forming the upward spiral flow, water is clear in the hydrocyclone flow to set up dynamic filters in the upper area. In the centrifugal separation zone, suspended particles (alum flowers) with a particle size of more than 20 centimetres are usually separated by solid solution to the sludge concentration zone. The waste water is separated by centrifugation into the shallow sedimentation zone, and the inclined pipe precipitation zone is designed according to the sedimentation theory of shallow ponds. In subsidence area set up many populated inclined tube, makes the water suspended impurities in the inclined board or inclined tube sedimentation, water flow along the inclined board or inclined tube, isolated from the sludge under the action of gravity along the inclined plate (pipe) to fall to the bottom, then concentrate discharge. This kind of pool can increase the precipitation efficiency by 50-60%, and increase the processing capacity by 3-5 times in the same area. By shallow layer settling area upper water into dynamic filtering area again to complete the adsorption filtration, filtration area by surface adsorption of suspended filter material, surface area, strong adsorption ability, can intercept more than 5 microns of grain size of suspended solids. Filter in dynamic state, so the filter material is not easy to block, the particles adsorbed are easy to fall off and sink to the separation area, so the filter material has a long backwash cycle (0.5 ~ 1 month backwash). The wastewater is separated and purified by multistage solid solution.

Centrifugal separation, shallow layer settling, filtration loss of suspended particles in under the action of centrifugal force and gravity into the sludge concentration, sludge in upper taper bucket area under the effect of convergence, particle groups combined into a whole, each remained relatively unchanged position sink together, some SS lower the bucket area is very high, the gap in the liquid extrusion interface between particles, solid particles is concentrated pressure after discharge from the bottom of the pyramid, is generally the sludge moisture content of 90% or less (amount is only about 1/6 of the traditional process).