CN103936182A

CN103936182A - Zero-chemical and zero-discharge treatment method of machine-made sand wastewater

Info

Publication number: CN103936182A
Application number: CN201410167188.9A
Authority: CN
Inventors: 蒋经纬; 蒋正海
Original assignee: ZHEJIANG HAIHE ENVIRONMENT TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG HAIHE ENVIRONMENT TECHNOLOGY Co Ltd
Priority date: 2014-04-23
Filing date: 2014-04-23
Publication date: 2014-07-23

Abstract

The invention discloses a zero-chemical and zero-discharge treatment method of machine-made sand wastewater, belonging to the technical field of wastewater treatment. The method is characterized by comprising the following steps of firstly, conveying the machine-made sand wastewater into a horizontal-flow type multi-hopper fractional precipitator so as to obtain rough and fine sand and sludge with water from near to far in precipitating hoppers on different precipitating sections; secondly, conveying the rough sand with the water from a rough sand precipitating hopper to a rough sand rotational-flow filter for filtering, conveying the fine sand with the water from a fine sand precipitating hopper to a fine sand rotational-flow filter for filtering, and conveying the sludge with the water from a sludge precipitating hopper to a box type pressure filter for filtering; thirdly, treating filter liquor after filtering. According to the method, chemicals do not need to be added, the sludge can not cause secondary pollution, and the cost of expensive medicaments is saved; a filtering process consisting of the horizontal-flow type multi-hopper fractional precipitator, the rotational-flow filter and the box type pressure filter is adopted, the industrialized flow line treatment of the machine-made sand wastewater is realized, and the treatment efficiency is high.

Description

Zero dosing of a kind of Machine-made Sand waste water, Zero discharge treatment method

Technical field

The invention belongs to technical field of waste water processing, be specifically related to a kind of Machine-made Sand waste water zero dosing, Zero discharge treatment method.

Background technology

In recent years, domestic capital construction fast development makes the sharp increase of building sand amount, and early stage river sand mining can not meet existing development and build required sand using amount, and for ensureing river course safety, all parts of the country have been sent to prohibit and adopted order, and regulation is adopted the sand time and adopted sand amount.The unbalanced supply-demand of the increase of building sand and river sand mining amount, more impels Machine-made Sand industry development.Machine-made Sand is also artificial sand, becomes silt content low by process post-treatment such as rubble, classification, cleanings on mountain stone, river course cobble etc., the building sand of different-grain diameter specification.And in the course of processing owing to using a large amount of clear water in matting, clean the broken pulverized powder and the thin mud carrying etc. that reduce in sandstone by sandstone.It contains silt particle waste water as river course can cause the local alluvial in river course, riverbed is raised affects overcurrent efficiency without entering after effectively processing, and silt particle can the ecotope in havoc river and the hydrological landscape of river water area in a large number.

Prior art is processed sand waste water processed two kinds, a kind of is the way of natural subsidence, another kind is dosing sedimentation process, the disadvantage that the former exists is that settling efficiency is low, can not form suitability for industrialized production, and the medicament expense of the latter's dosing sedimentation process is with high, and the unclear recovery utilization rate of throw out classification is low, and exists sedimentation medicament secondary pollution problem to solve.There is no new technology generation and process sand waste water processed, in the patent of China, though about 4320 of the technical schemes of wastewater treatment, none is the technical scheme about " sand wastewater treatment processed " just like publication number: CN103641280A " a kind of Waste Water Treatment " etc.

Summary of the invention

The object of the invention is the blank in order to fill up prior art, a kind of Machine-made Sand waste water zero dosing, Zero discharge treatment method are provided, its whole process does not need dosing, and mud non-secondary pollution, can be used as soil improvement, and realization mechanism sand wastewater zero discharge; Because not dosing, has saved the not low reagent cost of price; Adopt the filtering process of flat flow multibuchet fractionation precipitation device, cyclone filter machine, chamber-type press filter composition, realized the industrialization pipeline processes of Machine-made Sand waste water, effect of processing is high; Water in clear water reuse pool obtains recycle, thereby the processing cost of Machine-made Sand waste water is further reduced.

Above-mentioned goal of the invention is achieved through the following technical solutions, zero dosing of a kind of Machine-made Sand waste water, Zero discharge treatment method, its main points are that it comprises the steps: that according to size fractionated sand, the mud density extent in water causes the different principle of settling velocity, first by Machine-made Sand waste water input flat flow multibuchet fractionation precipitation device, in flat flow multibuchet fractionation precipitation device in the precipitation bucket of different precipitation sections near to the sand with water, the mud that far obtain from coarse to fine; Clear water after sand, mud precipitation is disposed to clear water reuse pool from flat flow multibuchet fractionation precipitation device, from newly for cleaning Machine-made Sand; The above-mentioned coarse sand with water from being input to the cyclone filter machine of coarse sand by pump, the precipitation bucket of the coarse sand of flat flow multibuchet fractionation precipitation device is filtered, the above-mentioned fine sand with water is filtered from the precipitation bucket of the fine sand of flat flow multibuchet fractionation precipitation device is input to the cyclone filter machine of fine sand by pump, the above-mentioned mud with water is input to chamber-type press filter from the precipitation bucket of the mud of flat flow multibuchet fractionation precipitation device by pump and filters; Defeated the getting back in flat flow multibuchet grading sedimentation tank of filtrate after the cyclone filter machine of the cyclone filter machine of coarse sand, fine sand filters processed again; Defeated time clear water reuse pool of filtrate after chamber-type press filter filters is reused for cleaning Machine-made Sand; In clear water reuse pool, the mud containing rate for reducing gained sandstone in the cyclone filter machine of the cyclone filter machine of pump input coarse sand, fine sand for part clear water, improves and reclaims sandstone quality.

Its whole process of the present invention does not need dosing, and mud non-secondary pollution, can be used as soil improvement, and realization mechanism sand wastewater zero discharge; Because not dosing, has saved the not low reagent cost of price; Adopt the filtering process of flat flow multibuchet fractionation precipitation device, cyclone filter machine, chamber-type press filter composition, realized the industrialization pipeline processes of Machine-made Sand waste water, effect of processing is high; Water in clear water reuse pool obtains recycle, thereby the processing cost of Machine-made Sand waste water is further reduced.

Brief description of the drawings

Fig. 1 is step block diagram of the present invention

In Fig. 1,1-flat flow multibuchet fractionation precipitation device, 2-clear water reuse pool, 3-cyclone filter machine, 4-cyclone filter machine, 5-chamber-type press filter.

Embodiment

With regard to the represented embodiment of Fig. 1, the invention will be further described below, a kind of Machine-made Sand waste water zero dosing, Zero discharge treatment method, and it comprises the steps:

First with pump by Machine-made Sand waste water input flat flow multibuchet fractionation precipitation device 1, in the precipitation bucket of flat flow multibuchet fractionation precipitation device 1 interior different precipitation section near to the far away sand with water, the mud from coarse to fine that obtains; Clear water after sand, mud precipitation is disposed to clear water reuse pool 2 from flat flow multibuchet fractionation precipitation device 1, from newly for cleaning Machine-made Sand; The above-mentioned coarse sand with water is input to by pump the cyclone filter machine 3 of coarse sand and is filtered from the precipitation bucket of the coarse sand of flat flow multibuchet fractionation precipitation device 1, the above-mentioned fine sand with water is input to by pump the cyclone filter machine 4 of fine sand and is filtered from the precipitation bucket of the fine sand of flat flow multibuchet fractionation precipitation device 1, the above-mentioned mud with water is input to chamber-type press filter from the precipitation bucket of the mud of flat flow multibuchet fractionation precipitation device 1 by pump and filters 5; Filtrate after the cyclone filter machine 4 of the cyclone filter machine 3 of coarse sand, fine sand filters is defeated by pump gets back in flat flow multibuchet grading sedimentation tank 1 and processes again; Defeated time clear water reuse pool 2 of filtrate after chamber-type press filter 5 filters is reused for cleaning Machine-made Sand, in clear water reuse pool, the mud containing rate for reducing gained sandstone in the cyclone filter machine 4 of the cyclone filter machine 3 of pump input coarse sand, fine sand for part clear water, improves and reclaims sandstone quality.

Claims

1. Machine-made Sand waste water zero dosing, Zero discharge treatment method, it is characterized in that it comprises the steps: that according to size fractionated sand, the mud density extent in water causes the different principle of settling velocity, first by Machine-made Sand waste water input flat flow multibuchet fractionation precipitation device, in flat flow multibuchet fractionation precipitation device in the precipitation bucket of different precipitation sections near to the sand with water, the mud that far obtain from coarse to fine; Clear water after sand, mud precipitation is disposed to clear water reuse pool from flat flow multibuchet fractionation precipitation device, from newly for cleaning Machine-made Sand; The above-mentioned coarse sand with water from being input to the cyclone filter machine of coarse sand by pump, the precipitation bucket of the coarse sand of flat flow multibuchet fractionation precipitation device is filtered, the above-mentioned fine sand with water is filtered from the precipitation bucket of the fine sand of flat flow multibuchet fractionation precipitation device is input to the cyclone filter machine of fine sand by pump, the above-mentioned mud with water is input to chamber-type press filter from the precipitation bucket of the mud of flat flow multibuchet fractionation precipitation device by pump and filters; Defeated the getting back in flat flow multibuchet grading sedimentation tank of filtrate after the cyclone filter machine of the cyclone filter machine of coarse sand, fine sand filters processed again; Defeated time clear water reuse pool of filtrate after chamber-type press filter filters is from newly for cleaning Machine-made Sand; In clear water reuse pool, the mud containing rate for reducing gained sandstone in the cyclone filter machine of the cyclone filter machine of pump input coarse sand, fine sand for part clear water, improves and reclaims sandstone quality.