JPS58112096A - Purification of organic waste water or organic sludge - Google Patents

Abstract

PURPOSE:To enhance the power of dehydrating treatment without the necessity of a sludge-thickening step, by adding a ferric flocculant to treated water from the step of biological treatment, separating the treated water under an acidic condition, and subjecting the separated water to advanced treatment while dehydrating the separated sludge. CONSTITUTION:After organic waste water 1 such as night soil is treated in the step 2 of biological treatment, the biologically treated water 3 (or a mixed slurry of it with excess biological sludge) is mixed with a ferric flocculant 4, e.g. ferric chloride or poly (ferric sulfate), and optionally an alkali agent 5, e.g. slaked lime, and separated into clean separated water 7 and conc. sludge 8 by using the step 6 of capillary suction-dehydration with felt, sponge or the like. The separated water is subjected to advanced treatment, while the conc. sludge 8 is supplied to a filter press 9 provided with a pressing mechanism to obtain dehydrated cake 10 having a low water-content and a dehydration filtrate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for treating 4i wastewater or organic sludge. A tertiary treatment method with one vertical east treatment is widely practiced.

That is, in the first stage, organic wastewater 1 is buried in biological wastewater 3.
The other side is treated with iron thread warping agent 4, alkaline filtration agent S and holimer s by cooling and coagulation sedimentation station & 20, and the separated water is treated with soft P layer and Shimara treatment salt at % 21. The sludge separated from l@ is subjected to dehydration treatment. Note-
U, 2 to 11 Ichigodokoro 1-@, 2B is #L Kumishin Station sludge,
24-frame biological sludge, 2iI sludge dewatering technology, 26L sludge transport technology h127 are treated with a dehydration aid 〇 In this way, conventional methods are used to remove sludge, curd floc OTM liquid fraction #ll
As a law, flotation separation (transfer) is not particularly used in the sinking method, so the FMJ ratio is low due to floc carryover, and r(4 to exclude SSkM&, and sand Filtration': It is necessary to set up L@21, which complicates the process.

In addition, @Nano L Biological Sotai Sludge 24, #! The 88 flocculation of the wrinkled sludge 23 (or flotation separation sludge IIFO) is 1 to 3.
- Because the machine was dry and the slag was sludge, there was a large amount of sludge dewatered, and there was a lot of water to be supplied to S, and the dewatering machine's IBI coffee power was also 1 salt, which was a big problem.

For this reason, it is necessary to feed the forging sedimentation sludge 23 to the dewatering machine once.
Dispersion Kame 4: I, which defeats the sludge machine shaft 1 Kusunoki 26 with Kashitsukner, centrifugal Tsumugi, and wedge wire screen,
The thickener is F&Kamemoshi, and Centrifugal Iso #1 IaA has the disadvantage of power cost and screen low product cost (the cost of Hollymer's water is extremely high).Furthermore, it is necessary to assist in dehydration during the dehydration process of Yutsumugi Firaku. 217t - The problem of making it mandatory is fc.

Also, south inertia, drainage, activated sludge plant J! One of the biggest problems in the sludge treatment process is the pouring of biologically treated surplus sludge, and the conventional method of sludge sedimentation by IR chain JI is one of the biggest problems in the sludge treatment process.
! Recently, instead of the law, the dim sum method and the levitator method have been considered.
- The 8 important points that the power cost is too high have not been resolved δf.

The present invention fundamentally solves the many drawbacks of conventional organic co-hydrobiological treatment brine, simple treatment of organic co-water biological treatment salt water, sludge dewatering, and sludge dewatering. Provides a 7゛ process that can be used for 01-rope b1 book
The treated water from the biological tin salt or the slurry of the treated water and excess sludge is treated in a co-water biological treatment facility, and at least animal silk is added to the organic sludge. The mechanism of R nest agent,
Utilizing the capillary suction action, the septic liquid is separated into separated water and sludge, and the separated sludge is filtered into water and sludge. It is a tin-salt paper that can be slowly cultivated or soiled without being dehydrated.

Therefore, in Europe, referring to the illustrations of the first embodiment of this defense, one example of this is that one wastewater such as human waste, one biological salt treatment plant, and two
(Biological nitrification removal! Biological organisms such as wood sludge are also treated with science and technology*), and then the biologically treated water 3 (or a slurry of this and surplus biological sludge) is added to the chloride 2 , Ho94tCrl
! Iron-based flocculant 4 and slaked lime alkali agent 6 depending on the dispersion (PH1-Difficulty)
L and 7 Elt, hair 11i & pull-out woodwork by Suhonji etc.? i! (Use the rc,p,filter) 6r(temperature separated water 7 and micro-moving sludge 8.Separated water 1) 8 is supplied to a filter press 9 equipped with a pressing ring to obtain 1G of dehydrated cake with a low moisture content and dehydrated Faulk. Instead, the sludge I placed in the hair 11v & dewatering machine-7 and was served by capillary suction dehydration.
Filter 7-less 9 RC drying and dehydration in the history 0 In addition, when using the present invention for 1-hateful sludge such as raw @ Munekoma sludge, as shown in Figure 3 1 Add at least iron-based IR sludge 4 to the sludge 30.
Use a trowel to reduce the sludge to 1 m, and dehydrate the sludge 31 with a filter press 9 equipped with a squeezing ridge structure to obtain a dehydrated cake. According to the present invention, it is possible to obtain the following effective rice, which fundamentally eliminates the various shortcomings of the conventional process. Because it is placed in the first stage of treatment, there is no problem with the conventional floc-crystal structure, sludge * storm, or dilution. It is more concentrated than salt water, resulting in sand filtration in the conventional process.

■ 5SIIjL of perturbation sludge 8 is lO whisper root Kuragadani
It is easy to handle, and it is even more beautiful than the conventional process 1 to 396 88 sludge. Improves lump ability.

■ The i%lkmM mud, which has been dehydrated by adding animal thread collectors to biologically treated water and dewatering it, can be dehydrated with a filter press to have a water content of 50 to 6 without adding any dehydration aid.
It has been found that a cake with a relatively low water content of 5-0 can be obtained. Therefore, when the dehydrated cake is dried and incinerated, it becomes oily or unstainable, giving off a reddish smell with an extremely chewy energy effect.

■ In addition, the biological surplus sludge generated from the Ikuchi treatment plant Netomi is collected in the raw @Kairui water 3 and treated with salt for the purpose of removing COD, color change, rinsing, and 88 from the biological treatment sewage. It has been found that the iron-based flocculant 4 added as a 1-organic flocculant significantly improves the dewatering properties of biological surplus sludge. Therefore, even in the dewatering of biological surplus sludge, a separate dewatering aid in the conventional process is no longer required, and four resources are now available.

■ -'*Guy suction waterworks @S for biological nine salt water 3 Shima Arashi nine meters #! Since it is located in the Kume phase, the conventional 70 cess & Kumi sink & (゛ or floating fraction excavation machine), ShiP Oboro Koki, sludge 111
It can be achieved with three steps or a single stroke of n engineer, process simplification, #1M1t responsibility, and a large low Jk
It became WJ Noh.

■ Since the southern molecule bulking agent (polymer), which is essential and rare in the conventional process 1c, is completely undesirable in the present invention 6rc, 11 Shionai decreases and the polymer f# disintegration force is reduced. It will be easier to maintain and prevent clutter! - The residual toxicity may also occur.

Φ Original F! 8 is a detailed explanation of organic sludge, which is commonly used for water, and 11 the sludge flowing into the iron drawing and dewatering process is cooled and easily transformed into a suitable material. [Am sludge of 10- or more is hated, so I dehydrated it with 71 Lutarus, so I couldn't get it by force sedimentation, floating condensation, or centrifugal condensation.The sludge became bird molecules. chain iiJ without any dispersion of flocculants or large forces! ! ! Tin salt can be produced from aqueous single-plate sludge in an extremely rational manner.

Next, the implementation of the present invention will be described.

*Water on the side*t*Natural urine T1 Nitrification without adding water *L wrinkled biological theory of natural tin salt.

Shima l Senji, a mixture of Ashi Biological Treatment Misaki Water and biological surplus sludge (884
800-5oooq/z, pH 7.3-7.5. ill
Solution! C0D500~600WIi//l* 1! % color J13000'~4000, PO4480~560w
v/l-) to chloride 2 1i'ect, t-3000
*/ After adding Lllk, add slaked lime cg (oH** about 1
00019/lt-Additionally, moxibustion to pH 3-4.5, hair drying machine (C, P, filter), jlP
) Condolences for the water quality of 2Fe^ Surface geological water and 88 [1G-1
The chain-woven sludge of 5-1 was prepared in a volume of 01 m2, and this fine sludge 1 was pumped into a press with a filter press without adding any dehydration aid, and the filtration pressure was 4 kgj/a and the squeezing pressure was 15 kyf. /ctA
A dehydrated cake with a negative water content of 65.2% was obtained from the axoneme dehydrated. The low jealousy violet of this dehydrated cake is 2900/J#
- It is divided by p and s, and self-combustion is possible, which is rare.
2) As a result of applying the following TIk painting method to the canned oil-based sludge generated from one sludge tin plate,
Ik Tsumugi sludge raising storm is 3
2.Also, even if you apply the Youitokyo collection agent to any of the a combination methods of ■, ■, and O, the sludge drawing board will be added to the turret. l1lIIIi by law! Sludge T Monohonno (#1G 11 people) W (Therefore, the sludge that was poured into the filter press and dehydrated was a cake with a low moisture content of 64 to 6b.)

[Brief explanation of the drawing]

Part 1, number 4, and number 3 show the results of the present invention. Biological treatment 1x, 3... Raw qm Kukyu water, 4... Youishinken type agent, 6... Alkaline agent, 5
′...Horimar, 6...Hair ta pull arm clumsiness, y,
sa, sa'...melt water, t...-1su2tsuji, 9
...Filter press, 14J, a2...Dehydrated cake, 11...Dehydrated P liquid, 20...Siye Shenzhen Technique, 21...Sand P-Technology 1, 28...Shagyishen Station Sludge, 34... Biological surplus sludge, 16... 1 sludge dewatering unit, 26... Sludge chain shaft rack, F... Dewatering aid, 30... 1 Machinery sludge, 31... l1lIi
IIIA sludge. Patent developer Eiho Infilco Co., Ltd. Daishioiri Benshioji Minato Yamago - Daishioiri Benshioji 1) Minoru

Claims (1)

[Claims] 1. Treating organic wastewater with a biological treatment 1;
Treated water or a slurry of salt water and excess sludge or organic sludge is treated with at least Tetsukyoto agent [Matsuka, or separated water under acidic conditions using the suction action of the upper chamber] and the separated sludge for a minute, and the separated water 1 is treated once,
A method for treating organic wastewater or organic sludge characterized by dewatering the separated sludge in a filter press shop.