P-BANK

Find us by looking for a toilet – leave as a proud P Donor

Today’s agriculture depends on industrial fertilizers containing P, Phosphorus. This non-renewable is currently still obtained from mined Phosphate Rock which is depleting quickly. To secure our future food supplies we need to start to recover P now.

The P-BANK is a public toilet that aims to close the P-cycle. The sanitation system separates Pee from the waste water which simplifies nutrient recovery. This happens directly in the P-BANK. The recovered P is re-used as fertilizer in the P-BANK garden.  

COLLECT

In the donor rooms you can comfortably donate in a no-mix toilet or a waterless urinal.

RECOVER 

While washing hands, you can peek into the recovery lab. A process of chemical reactions recovers P from Pee safely and hygienically.

RE-USE

Leaving the P-Bank you’ll discover that the recovered P can be successfully reused as an alternative for mined Phosphorus.

Made By Reflect 4 Instant

Reflecting on this moment, I initially felt a wave of defensive irritation. I had followed protocol. I had been polite. But as I sat with the memory, the irritation gave way to a deeper, colder discomfort: shame. I had not been listening. I had been managing tasks, not people. The feeling that surfaced most strongly was not regret about the task outcome—the data entry was completed fine by someone else—but rather a sense of lost trust. Sarah did not challenge me. She simply withdrew. In that silent nod, I saw the invisible cost of my assumption: that my logistical logic was more valid than her unspoken need.

Since the exact prompt from "Reflect 4" isn't provided, I will assume a common reflective stage:

Below is a sample essay written in response to that reflective prompt, based on a hypothetical but realistic experience. The Echo of a Missed Connection: Learning to Listen Beyond Words made by reflect 4

In the end, this small failure became a large mirror. It showed me that my greatest risk as a reflective practitioner is not making mistakes, but moving so quickly past them that I never see the assumptions buried underneath. Reflection is not about punishing the past; it is about redesigning the future. Next Tuesday, there will be another meeting. And this time, I will listen for what is not being said. If you meant a specific prompt from a particular "Reflect 4" tool (e.g., from an educational workbook, a journaling app, or a corporate training module), please share the exact wording. I will rewrite the essay to match that prompt precisely.

Analyze the situation and your feelings to develop insight. What does this experience tell you about your values, assumptions, or professional practice? Reflecting on this moment, I initially felt a

This experience forces me to confront a core assumption I had long held about leadership: that clarity and efficiency are the highest forms of respect. I believed that by keeping meetings short, decisions crisp, and roles defined, I was honoring everyone’s time. What I failed to see was that my version of efficiency was actually a form of control. I was prioritizing the smoothness of the system over the humanity of the individual. My values—collaboration, inclusion, fairness—were not betrayed by malice, but by a lazy shortcut: assuming that silence means consent, and that a request denied without curiosity is still fair.

It was a Tuesday afternoon in late autumn, and I was facilitating a small team meeting to allocate project roles for an upcoming community outreach initiative. The atmosphere was ordinary—clipboards, half-empty coffee cups, the low hum of fluorescent lights. I had prepared a detailed task list, confident in my efficiency. When I asked for volunteers for the data-entry portion, a newer team member, “Sarah,” hesitated, then quietly asked if she could instead manage the in-person sign-up desk. I dismissed the request gently, explaining that data entry needed to be done first. She nodded, said nothing more, and the meeting ended. Later, I learned from a colleague that Sarah had social anxiety, and the desk role—brief, structured, public—was actually far more manageable for her than hours of isolated, error-sensitive computer work. I had not asked why she made the request. I had assumed I knew what was best. But as I sat with the memory, the

The insight I draw is unsettling but necessary. Listening is not merely hearing words; it is pausing to investigate the context behind them. When Sarah asked for the desk role, I heard a preference. I should have heard a possibility—and a person signaling something they could not yet name. My professional practice as a coordinator must now include a new rule: before saying “no” or “let’s stick to the plan,” I must ask one open-ended question. “Help me understand what feels better about that role for you.” That single question would have changed everything. It would have turned a transaction into a conversation.

PROJECT 

In 2018 the Bauhaus University Weimar and WERKHAUS destinature received funding from the German Federal Environment Foundation (DBU) to develop the first P-BANK. The concept was developed by Anniek Vetter and Sylvia Debit during a semester project at the Bauhaus University Weimar led by Prof. Jörg Londong back in to 2013.
The P-BANK was first used for several months during the 100th anniversary year of Bauhaus in Weimar, Germany 2019. Later that year the P-BANK was at the Tiny Living Festival. The project was presented at the Antenna platform during the Dutch Design Week 2019. 
WERKHAUS destinature built the mobile P-Bank from sustainable materials, based on the service and communication designed by Debit and Vetter, including donor-rooms containing the toilet safe! sponsored by Laufen. The recovering system is developed by the B.is, the department of urban water management and sanitation of the Bauhaus University Weimar led by Prof. Jörg Londong, with the support of Vuna and Eawag. Besides consulting Goldeimer supports getting the story and the out there! 

© Copyright 2019 P-Bank - All Rights Reserved

LOCATION

Werkhaus
Salzwedeler Str. 13
D -29439 Lüchow

CONTACT

Bauhaus-Universität Weimar

 
 

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