News Comunicazioni aziendali


21-05-2018 CHOLIDES REDUCTION BY ELECTRODIALYSIS IN LEACHATE TREATMENT

Hello friends,

Today I would like to propose an innovative application of Electrodialysis (ED) for desalination of water coming from landfill leachate treatment.

The purpose is to reduce the chloride concentration from 6000 mg/lt to 1200 mg/lt for discharging under the limits.

This is a real alternative to reverse osmosis where we can concentrate chlorides with a factor > 20 so starting from a capacity of 20.000 lt/h we will discharge 833 lt/h of concentrated (*).

The new ED process by Hoene is managed with new no fouling membranes and is good for treating process water.

Chlorides reduction

30-03-2018 Applicazioni di Elettrdialisi ED

Salve,

abbiamo pubblicato sul nostro sito dedicato alle tecniche elettrochimiche, http://elettrodepurazione.it, una nuova pagina introduttiva a tecniche di separazione mediatte elettrodialisi a partire da acque reflue. Le applicazioni sono davvero numerose ed interessanti a partire dalla desalinizzazione di acque reflue come ad esempio percolati di discarica, per consentirne lo scarico in acque superficiali. Seguendo il link http://elettrodepurazione.it/elettrodialisi trovate maggiori dettagli-

 

Hoene

01-12-17 BORON REMOVAL BY ELECTROCOAGULATION

BORON REMOVAL BY ELECTROCOAGULATION FROM SALT WASTEWATER

Boron removal is one of our  special targets so  we treat it with our special EC set up salt waste water like a particular challenge because many factors and interfering elements ions can limit or even inhibit the process.

In this case, we removed Boron by Electrocoagulation where all the traditional technologies like resin and chemical physical treatments failed before.

This stream is coming from double treatment where different waste water are treated togheter so after

 

  1. Chemical physical coagulation (FeCl3 + lime)
  2. Biological oxidation

 

We have a boron content of 27 mg/lt.before our EC unit.

The target to reach is the limit for discharging meaning under 4 mg/lt

 

  • Boron in: 27 mg/lt
  • Boron out: 1,4 mg/lt
  • Contact Time: 20 min

·         Specific treatment cost: 3,5 €/ton

25/09/2017 – AMAZING ULTRAFAST OIL WATER SEPARATION APPLICATION

Hoene is proud to inform about a new installation of a rotary filtration system equipped with super hydrophilic membranes (SHM) with 20 micron pore size for a very difficult waste water to treat I mean from collecting of several different types of landfill leachates with suspended oil too.

We are removing almost 300 ppm of suspended oil  like first step of the treatment cycle before chemical physical and biological treatments. In this case it is easier to manage the following depuration steps without the instruments controls getting dirty and  less COD to oxide.

  • Capacity: 20 m3/h
  • Power installed: 3 KW
  • Filtration area: 1,8 m2
  • CODin : 5500 mg/lt
  • CODout: 4000 mg/lt

tanks to SHM produced by Hoene it is possible to approach with a very easy filtration process – Dead End filtration on rotative disks – instead of a traditional and expensive cross flow process.

 

Note: after the oil removal, we tested the filtered water (BOD/COD = 1/6) with our advanced electrical oxidation with very high ratio COD removal  over 80 % I mean final COD 700 mg/lt.

 

 

27/06/2017 – NEW BORON REMOVAL FROM WASTE WATER BY ADSORPTION

NEW BORON REMOVAL FROM WASTE WATER BY ADSORPTION

In our technologies for anions removal by adsorption, we can also propose a new process for an easier and cheaper process with respect of traditional process (Flocculation, Reverse Osmosis and Ion exchange resins).

After the optimal result for sulphates removal from pickling wastewater, now we completed also a first trial for Boron removal from a very difficult wastewater coming from a collection of many different streams in a Industrial waste treatment platform.

Where traditional flocculation treatments did not show results, we removed 99% of the boron with our special selective adsorbent HANSO BORON with an easier and cheaper process.

  • Inlet: 10 ppm
  • Outelt: <0,5 ppm
  • Contact time 15 min

We treated also with the same procedure, seawater like pre treatment for industrial use and we obtained the same high removal efficiency (from 4000 ppm to less than 2 ppm in the treaded water).

We think with this new process we can treat many types of waste water thanks to

  • Selectivity for boron
  • High removal efficiency of Boron – 99 %
  • Boron concentration reachable in treated water until the limits for discharging down to 2 mg/lt
  • No eluates to discharge and minimal volume of hazardous solid waste.
  • Minimal installation costs

14/06/2017 – NEW SULPHATE REMOVAL PROCESS by HOENE

Many industrial wastewaters, particularly coming from pickling or mining process, contain high concentrations of sulphate. These concentrations typically exceed the limits for discharging so Hoene srl has developed and now holds its own chemical physical treatment alternative to the traditional technologies that are present on the market like

  • Chemical precipitation by lime (low cost but non discharging limits reachable)
  • Ion exchange (high installation cost and large volume of eluates to discharge)
  • Membrane separation (high installation cost and large volume of eluates to discharge)

 

The Hoene process can reduce sulphate concentration in most wastewaters to less than 100 mg/L through use of a proprietary powdered reagent with the following advantages

  • High removal efficiency of sulphate – 95 %
  • Sulphate concentration reachable in treated water until down to 100 mg/lt
  • Additional removal of metals and other parameters (Boron)
  • No eluates to discharge and minimal volume of hazardous solid waste.
  • Minimal installation costs

05/09/16 – Trattamento acque da lavaggio cisterne con EOx

Hoene ha portato a termine una prima serie di test con impianto pilota eseguiti presso la nostra sala prove con esito confortante.
Sono state prese in considerazione diversi tipi di acque provenienti da lavaggio cisterne con diversa concentrazione di inquinanti quali:


    • oli sospesi ed emulsionati;
    • tensioattivi anionici, cationi e non ionici;
    • glicoli;
    • ammine;
    • grassi;
    • silice.

    il ciclo di processo consiste in EOx + Adsorbente ed è in grado di rimuovere la quasi totalità degli inquinanti consentendone lo scarico fognario. Per il riutilizzo delle acque, invece,  la qualità dell’acqua depurata consente  la chiusura del ciclo con una unità di Osmosi inversa